GLDS Studies from Shenzhou-8 experiments

GLDS Description Sample No. Dose (mGy)
GLDS-165 N2 Spaceflight Static con (0G) GSM2414644 1.92
GLDS-165 LS292 Spaceflight Static con (0G) GSM2414645 1.92
GLDS-165 N2 Spaceflight 1g -centrifugal con GSM2414646 2.27
GLDS-165 LS292 Spaceflight 1g-centrifugal con GSM2414647 2.27
GLDS-166 N2 Spaceflight Static 1A (0G) GSM2416821 1.92
GLDS-166 LS292 Spaceflight Static 1C (0G) GSM2416822 1.92
GLDS-166 N2 Spaceflight 1g -centrifugal 2A GSM2416823 2.27
GLDS-166 LS292 Spaceflight 1g-centrifugal 2C GSM2416824 2.27
GLDS-167 N2 Spaceflight Static con (0G) GSM2412681 1.92
GLDS-167 LS292 Spaceflight Static con (0G) GSM2412682 1.92
GLDS-167 MT4930 Spaceflight Static con (0G) GSM2412683 1.92
GLDS-167 N2 Spaceflight 1g -centrifugal GSM2412684 2.27
GLDS-167 LS292 Spaceflight 1g-centrifugal GSM2412685 2.27
GLDS-167 MT4930 Spaceflight 1g-centrifugal GSM2412686 2.27

 

Shenzhou-8 Radiation Dosimetry

Launch: 2158 UT 10/31/2011 (Jiuquan Satellite Launch Center, China)
Landing: 1132 UT 11/17/2011 (Siziwang Banner, Inner Mongolia)
Orbit: average 340 km; inclination 51.4 deg

Detectors: LiF TLD

Samples were located in the DLR SIMBOX experimental facility (https://doi.org/10.1016/j.actaastro.2013.08.022) located in the spacecraft reentry module.

diagram of the spacecraft showing location of orbital module, re-entry module, service module

The TLDs were located on the outer wall of the sample container:

photo of the sample container

immediately adjacent to the samples, so the principal uncertainty in the sample dose is due to the sensitivity and processing uncertainty of the TLDs.  Two doses were recorded, one for animals at 0G and one for animals held at 1G in a centrifuge.

The slightly higher dose to the 1G samples is consistent with the slightly greater shielding of the centrifuge apparatus, and as previously discussed, the total dose of approximately 2 mGy for the 16 day flight is consistent with what would be expected given the orbital inclination of the Shenzhou-8.